Top Definition
When tits are so large and floppy and therefore unmanageable; it is like corralling unruly goblins underneath your shirt. Flopgoblins usually reside in F to G sized cups.
Damn those flopgoblins are so old I bet she started failing the pencil test at least 100 years ago.

She better stop running or else those flopgoblins are gonna give her a bloody nose.
by wormwood@efnet January 01, 2008

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